Has the forum been "sick" lately?

Is anybody else having trouble posting even simple replies on this forum?

It is often the case, starting recently, that I get a spinning "in progress" indicator that never stops spinning - and the reply is not posted. Other times, I get a message that I've posted to a forum where the posts require moderation.

I'm not sure if success / failure here has anything to do with whether or not I have the "Notify me of responses.." checkbox checked or not.